Electric motor drive for web printing, cutting and folding mechanism



N0V- 8, 1932 c.:v BfcoTTRELL, 3D 1,886,526

ELECTRIC MOTOR DRIVE FOR WEB PRINTING, CUTTING, AND, FOLDING MECHANISM Filed July 5, 1929 2 Sheets-Sheet l ATTORNEYS N0v 8, 1932. c. Es. coTTRELL, 3D 1,836,526

ELECTRIC MOTOR DRIVE FOR WEB PRINTING, CUTTING, AND FOLDING MECHANISM' Filed July 5, -`v1929 2 Sheets-Shee 2 INVENTOR M 75%,@ s@

ATTOR N EYS Patented Nov. 8, 1932 UNITED STATES PATENT oFFicE CALVERT B. GOTTRELL, 3D, OIE' WESTERLY, RHODE ISLAND, ASSIGNOR T0 G. B. GOTTRELL & SONS COMPANY, OF WESTERLY, RHODE ISLAND, A CORPORATION 0F DELAWARE ELECTRIC MOTOR DRIVE FOR WEB PRINTING, CUTTING AND FOLDING MECHANISM Application filed July 3,

My invention relates broadly to an electric motor drive for web printing, cutting and folding mechanisms, which drive includes master and auxiliary motors and control means for maintaining the auxiliary motors at predetermined speeds relative to the master motor.

My invention comprises a plural electric motor drive for the mechanism for printing on a running web, for the mechanism for cutting sheets from the printed web, for the mechanism for collecting and folding the socutsheets and for the mechanism for feeding the printed web to the cutting mechanism; novel control means being provided whereby the variations in the speed of the auxiliary motors will be automatically corrected to maintain the auxiliary motors at predetermined relative speeds with respect to the speed of the master motor.

My invention also comprises web tension controlled means for varying the speed of the auxiliary motor which drives the mechanism for feeding the printed web to the cutting mechanism and also where a` plurality of printing units are provided for varying the speed of the auxiliary motor for one of the printing units, to bring the printing units into proper register with respect to the web.

My invention is shown in connection with a two printing unit perfecting rotary web printing press where two colors are printed on each side of the web.

A practical embodiment of my invention is represented in the accompanying drawings, in which Fig. 1 represents a diagrammatic plan view showing the electric equipment for the several mechanisms with my novel control means associated therewith;

Fig. 2 represents a diagrammatic side view of such mechanisms; and

Fig. 3 represents on an enlarged scale one of the control mechanisms represented in Fig. 2.

It will be understood that the several parts of the electric equipment shown may be of any well known or approved construction.

The web 1 is lirst led around the impression cylinder 2 of the first printing unit to be 1929. Serial No. 375,829.

printed on one side by the form cylinders 3. and 4 and then around the impression cylinder 5 of the second printing unit to be printed ondtlrie other side by the fornicylinders 6 an 7.

An offset web 8 is fed from its supply roll 9 around the impression cylinder 5 and from thence to its rewinding roll 10 which may be driven by a. suitable electric motor 11. The printed web is then fed around the rolls 12 of the mechanism for feeding the web in register to the coacting rotary cutters 13, 13 of the cutting mechanism for severing the web transversely into sheets. From there the sheets are fed to the folding cylinders 14, 14 of a sheet collecting and folding mechanism from whence they are passed to a suitable delivery mechanism 15.

It will be understood that the feeding, cutting and folding mechanisms may all be of any well known or approved construction and arrangement.

The first printing unit is shown as driven by a master motor 16, the second printing unit by an auxiliary motor 17, the web feeding mechanism by an auxiliary motor 18, the cutting mechanism by an auxiliary motor 19 and the folding mechanism by an auxiliary motor 20. These motors derive their power from a motor-generator 21 through its inanually operated voltage control 22 which controls the speed of the master motor 16 and the normal relative speeds of the auxiliary motors 17, 18, 19 and 2O by voltage control of the generator. rlhe master motor 16 is shown as driving a longitudinal shaft 23 through bevel gearing 24; which shaft drives a pulley 25 through bevel gearing 26. The shaft of the auxiliary motor 17 is shown as provided with a cone pulley 27 which drives a reverse cone pulley 28 on a cross shaft 29 through a belt 30. A pulley 31 is mounted on this shaft 29. Pulleys 32, 33 are carried by rock levers 345 35, the free ends of which are connected by a flexible connection, in the present instance a sprocket chain A36 with a sprocket 37 on the shaft of the contact arm 38 of a control rheostat 39. A belt 40 passes around the pulleys 25, 31, 32, 33.- Springs 41, 42 serve the double purpose of holding the levers 34, 35 of the rheostat arm 38 in their neutral positions and also of holding the driving belt 42 under slight tension.

The master motor shaft 23 has a bevel gear driving connection 43 with a vertical shaft 44 which, in turn, has a bevel driving gear connection 45 with a horizontal shaft 46 which carries a pulley 47. The shaft of the auxiliary motor has a cone pulley 48fwhich drives through a belt 49 a conepulley 50, the shaft of which carries a b eltpulley 51. Pulleys 52, 53 are carried by the rock levers 54, 55, the free ends 0f which are connected by a flexible connection, in the present instance a sprocket chain 56 with a sprocket 57 which` carries the contact arm, not shown, of the Controlled rheostat 58. Springs 59, 60 serve the doublepurpose of holding the levers 54,

,- 55 and the rheostat arm in their neutral posiing connection 62 with across shaft which carries a pulley, 63. The shaftof the aux iliary motor 19 has a cone pulley 64 which drives through a. belt 65, a reverse cone pulley 66 which also carries al belt pulley 67 above :a the pulley 63.

Pulleys 68, 69 are carried by the rock levers 70, 71, the free ends of which are connected by a flexible connection, in the present 1nstance a sprocket chain 72 with the sprocket '73 on the axis of the Contact arm 74 of a control rheostat 75. Springs-76, 77 serve the double purpose of holding thelevers 70, 71 and rheostat arm 74 in their neutral positions and also of holding the driving belt 78 which passes around the pulleys 63, 67, 68, 69, under slight tension.

The vertical shaft 44 drives a short longif'flrsl shaft 79 through a bevel gear driving connection 80,V which shaft 79 drives a short vertical shaft 81 'through a bevel gear driving I connection 82. This vertical shaft 81 drives a horizontal shaft 83 through a bevel gear driving connection 84. This shaft83 has a pulley 85 thereon. The shaft of the auxiliary motor 18 has a cone 86 which is connected to a reverse cone 87 on the shaft 88 by a belt 89. Pulleys 90, 91 are carried by the roclrlevers 92, 93, the free ends of which are connected by a flexible connection, in the present instance a sprocket chain 94 with a sprocket 95 carried by the shaft of the contact arm 96 of the control rheostat 97. Springs 98, 99 serve the double purpose of holding the levers 92, 93 and the rheostat arm 96 in their neutral positions and also of holding the. driving belt 100 which passes around the pulleys 85, 88, 90, 91, under slight tension.

The means for varying the tension of the web as it passes from one printing unit to the other printing unit to bring the printing units into register on the web is as follows:

The web 1 as it leaves the rst printing'unit' passes over a roller 101 held under upward stress by a weighted flexible connection 102 tending to take up the slack in the web between the two printing units. This roller 101 is connected by a rod 103 with a bell rcrank klever 104 which, in turn, is connected by a rod 105 with a belt shifter fork 106 which embraces the belt 30. Y The web 1 also passes over a roller 107 carried by a two armed lever 108, 109 provided with a hand micrometer adj ustment`110 of any well known or approved" form. v

'The printed web 1 as it passes to the feedV` ing mechanismis led around a roller 111 held under upward stressby a1weighted flexibley connection112 tending to take .up the slack in the web. This roller 111 is connected bya rod 113 with a bell cranlr lever 114 which',|` in turn, is connected by a rod 115 with a belt shifter fork 116 which embraces the belt 89. The web on its way to the feeding mechanism also passes between rollers 117 118 car-V ried by a two armed lever 119, 120 provided? with a hand micrometer adjustment 121 of any well known or approved form. The con-` trol mechanisms perse hereinabove described form the subject matter of my copending ape plication filed of even dat-e herewith, its seriali.

number being 375,827.

When the auxiliary motors 17, 18, 19 .and 20k are ruiming atpredetermined speeds ,with

respect to the speed of the master motor 16 SOl their rheostat controlarms are held in their neutral positions as well: as their controlling rock levers. Should'l any of these auxiliaryI motors start to runahead7 or behind the additional pull on theircontrol device belts:

will cause their rock levers to move inop posite directions, thereby causing their rheostat armsto move along their contacts. in one or the other direction from their neutral positions, thereby causing their re spective auxiliary motors to slow down or speed up to their predeterminedrrelative speeds with respect to the master motor 16. Should the web run ahead or behind from the first printing unitvto the second printing unit the additional compensating device will come into action to shift the belt may be controlled by the compensating de!v vice and micrometer adjustment device.

From the above descriptionlit will be seen that any variation in the speeds of the auxiliary motors will be automatically lcorrected to bring them into their relative speeds with respect to the master motor as Well as ensuring the proper register between the first and second printing operations and the proper feeding register for the printed web to the cutting mechanism.

IVhile I have illustrated my invention in connection with a two printing unit web perfecting printing press with two colors on each side it is evident that I do not wish to limit myself to such a press but contemplate the use of my invention in connection with various types of presses where the equipment is applicable.

What I claim is l. IVeb printing and folding mechanisms and an electric motor drive therefor including a source of electric power, a master motor for the printing mechanism and an auxiliary motor for the folding mechanism, and means for automatically maintaining the auxiliary motor at a predetermined speed relative to the master motor.

feb printing and folding mechanisms and an electric motor drive therefor including a source of electric power, a master motor for the printing mechanism and an auxiliary motor for the folding mechanism, and means for automatically maintaining the auxiliary motor at a predetermined speed relative to the master motor, said means including an automatically controlled rheostat.

3. Web printing, cutting and folding mechanisms and an electric motor drive therefor including a source of electric power, a master motor for the printing mechanism and auxiliary motors for the cutting and folding mechanisms, and automatic means for maintaining the auxiliary motors at predetermined speeds relative to the master motor.

4. leb printing, cutting and folding mechanisms and an electric motor drive therefor including a source of electric power, a master motor for the printing mechanism and auxiliary motors for the cutting and folding mechanisms, and automatic means for maintaining the auxiliary motors at predetermined speeds relative to the master motor, said means including automatically controlled rheostats.

5. feb printing, cutting and folding mechanisms and an electric motor drive therefor including a source of electric power, a master motor for one printing unit, an auxiliary motor for the other printing unit and auxiliary motors for the cutting and folding mechanisms, and automatic means for maintaining the auxiliary motors at predetermined speeds relative to the master motor.

6. Teb printing, cutting and folding mechanisms and an electric motor drive therefor including a source of electric power, a master motor for one printing unit, an auxiliary motor for the other printing unit and auxiliary motors for the cutting and folding mechanisms, and automatic means for maintaining the auxiliary motors at predetermined speeds relative to the master motor, said means including automatically controlled rheostats.

7. Web printing, cutting and folding mechanisms and an electric motor drive therefor including a source of electric power, a master motor for Y one printing unit, an auxiliary motor for the other printing unit and auxiliary motors for the cutting and folding mechanisms, automatic means for maintaining the auxiliary motors at predetermined speeds relative to the master motor, and web tension controlled means for varying the speed of the printing unit auxiliary motor.

8. Web printing, cutting and folding mechanisms and an electric motor drive therefor including a source of electric power, a master motor for one printing unit, an auxiliary motor for the other printing unit and auxiliary motors for the cutting and folding mechanisms, automatic means for maintaining the auxiliary motors at predetermined speeds relative to the master motors, said means including automatically controlled rheostats, and web tension controlled means for varying the speed of the printing unit auxiliary motor.

In testimony that I claim the foregoing as my invention, I have signed my name this 26th day of June, 1929.

CALVERT B. COT'IRELL, 3D. 

